OS0510 Evaluation of grain strain distribution for creep damaged SUS304HTB steel through EBSD observation
Details
EBSD (Electron Backscatter Diffraction pattern) observations were conducted and GROD (Grain Reference Orientation Deviation) distribution patterns were obtained by drawing intersection lines settled on GROD maps for creep damaged samples of austenitic stainless steel SUS304HTB for boiler tube use. GROD distribution patterns were well fitted by continuum dislocation distribution functions and the representing parameter A of the distribution functions showed liner relationship against macroscopic creep strain. Using this relationship, creep strains near creep voids were evaluated as the similar levels of macroscopic creep strain.
